Isabel wrote 10 letters to friends each month for x months in a row. Write an expression to show how many total letters Isabel wrote.

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is

8.74 rounded to the nearest whole number

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)